drtjry



(N0 Mddel.)

I. 8v S. A. WARD.

' HORSE-SHOE.

No 363,925.. Patented May 31; 1887.

NITED STATES ATENT OFFICE.

FREDERICK \VARD AND SYDNEY ASLINE NVARD, OF SHEFFIELD, COUNTY OF YORK, ENGLAND.

' HORSESHOE.

SPECIFICATION forming part of Letters Patent No. 363,925, dated May 31, 1887.

Application filed January 25, 1887 Serial No. 225,496. (No model.) Patented in England October 15, 1886, No. 13,146.

tion thereof, reference being had to the accompanying drawings, which form a part of this specification. g

This our invention relates to the construction of sharpening bits or calks, suchas are attached to horseshoes to prevent slipping, and to the means for attaching them to the shoes without the use of screws, pins, or otherloose appliances. V

It'consists in making the sharpening-bits (either by the process of rolling or by stamping, or other similar means) of a V shape in crosssection, and fitting them into corresponding undercut grooves formed in the shoe.

The annexed sheet of drawings illustrates our invention.

Similar letters of reference indicate similar parts in all the figures. I Figure 1 represents in two views one of our sharpening-bits Fig. 2, a modification of same Fig. 8, a perspective view of a horseshoe with .one of the bits in position.

enedand tempered; or, if the steel is made of a sufficiently hard nature, these processes may. be dispensed with and the steel be left in its original state.

In carrying our invention into practice a suitable number of grooves 'such as D in Fig.

3 are formed on the under side of the shoe. They may be made both at the toe and the heel of the shoe or only at the heel, as shown in Fig. 3 of the drawings. These grooves are made rather narrower than the measurement of the base of the bit formed by the'sides BB, 1 5 a.

when in the desired position the bits are held I securely by the reacting force and frictional contact of the elastic compressed sides B B against the sides andbottom of the groove D, no further fastening appliances being necessary.

Although we'have hitherto described these improved sharpening-bits only in connection with shoes, it is obvious that they may be simi-' larly applied to attachments to shoes or to overshoes.

A modified form of the sharpening-bit is shown in Fig.2, in which the edges of the sides B are slightly turned back, as shown. The grooves D are made to correspond. One

or more slots, E, may be cut in the sides B, if 1 desired.

It will be observed that witheither form of v our calks but one holding groove or seat is required for each calk, and that the head-of each 'calk, as well asthc base of each, is hollow, as seen in Fig. 3. This construction adapts the calks to be made self-fastening, as aforesaid, and also "renders them to a certain extent vertically elastic when the weight of the horse is upon them, while any pei'manentspread increases the tightness with which they are held in place.

Having thus described our inventionand the manner of carrying it into practice, We wish it to be understood that we do not claim the use of undercut grooves formed in horseshoes, nor the use of solid fasteners or calks fitted therein; but

What we desire to secure by Letters Patent In combination with a horseshoe or the like provided with a single undercut groove for each calk, the withindescribed hard-metal elastic calks or sharpening-bits constructed of our own we have affixed. hereto our signatures Vshape in cross sectiomthehead or protruding in presence of two witnesses. portion, as well as the base of each, being hol- FREDK WARD V 10w,whereby they are adapted tobecornpressed V S'YDNES'Z ASLIN'E W AR]) 5 in driving them into said-grooves and securely self-fastened by expansion, substantially as VVit-nesscs: hereinbefore specified. R0121. F. DRURY,

In testimony that we claim the foregoing as BERNARD E. DRURY. 

